SB6c - Evidence for Evolution

Front

What is the evolutionary importance of embryonic development in vertebrates?

Back

The evolutionary history of organisms is seen in the way embryos develop.

Front

What are homologous structures?

Back

Structures that share a common ancestry or are modified versions of structures from a common ancestor that contain the same basic bone structure.

Front

Which species has the closest hemoglobin similarity to humans?

Back

Chimpanzees.

Front

What are vestigial structures?

Back

Structures with no function that are remnants of an organism’s evolutionary past.

Front

What do vestigial pelvic bones in whales indicate?

Back

Whales descended from four-legged animals.

Front

What is the significance of common ancestry in evolution?

Back

It explains how different species can share similar structures and traits due to a shared evolutionary past.

Front

Define natural selection.

Back

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is a fossil?

Back

The preserved remains or traces of a once-living organism, providing evidence of past life.

Front

What is the role of DNA in evolution?

Back

DNA carries genetic information that can mutate and be passed on, leading to variations in species.

Front

What is adaptive radiation?

Back

The process by which organisms diversify rapidly into a variety of forms to adapt to different environments.